checkasm-a.asm
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上传日期:2021-12-09
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文件大小:3k
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Audio
开发平台:
Visual C++
- ;*****************************************************************************
- ;* checkasm-a.asm
- ;*****************************************************************************
- ;* Copyright (C) 2008 Loren Merritt <lorenm@u.washington.edu>
- ;*
- ;* This program is free software; you can redistribute it and/or modify
- ;* it under the terms of the GNU General Public License as published by
- ;* the Free Software Foundation; either version 2 of the License, or
- ;* (at your option) any later version.
- ;*
- ;* This program is distributed in the hope that it will be useful,
- ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;* GNU General Public License for more details.
- ;*
- ;* You should have received a copy of the GNU General Public License
- ;* along with this program; if not, write to the Free Software
- ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- ;*****************************************************************************
- %include "x86inc.asm"
- SECTION_RODATA
- error_message: db "failed to preserve register", 10, 0
- SECTION .text
- cextern printf
- ; max number of args used by any x264 asm function.
- ; (max_args % 4) must equal 3 for stack alignment
- %define max_args 11
- ; just random numbers to reduce the chance of incidental match
- %define n3 dword 0x6549315c
- %define n4 dword 0xe02f3e23
- %define n5 dword 0xb78d0d1d
- %define n6 dword 0x33627ba7
- %ifndef ARCH_X86_64
- ;-----------------------------------------------------------------------------
- ; long x264_checkasm_call( long (*func)(), int *ok, ... )
- ;-----------------------------------------------------------------------------
- cglobal x264_checkasm_call, 1,7
- mov r3, n3
- mov r4, n4
- mov r5, n5
- mov r6, n6
- %rep max_args
- push dword [esp+24+max_args*4]
- %endrep
- call r0
- add esp, max_args*4
- xor r3, n3
- xor r4, n4
- xor r5, n5
- xor r6, n6
- or r3, r4
- or r5, r6
- or r3, r5
- jz .ok
- mov r3, eax
- lea r1, [error_message GLOBAL]
- push r1
- xor eax, eax
- call printf
- add esp, 4
- mov r1, r1m
- mov dword [r1], 0
- mov eax, r3
- .ok:
- RET
- %endif ; ARCH_X86_64
- ;-----------------------------------------------------------------------------
- ; int x264_stack_pagealign( int (*func)(), int align )
- ;-----------------------------------------------------------------------------
- cglobal x264_stack_pagealign, 2,2
- push rbp
- mov rbp, rsp
- and rsp, ~0xfff
- sub rsp, r1
- call r0
- leave
- RET